jewett



SEWELL E. J EWE'IT, OF HAVERHILL, MASSACHUSETTS.

Letters Patent No. 74,227, dated Femm/'11, 186s.

IMPROVEMENT IN OPERATING WINDOW-SHUTTERSA'.

fitte Scintille refettet tu iu tlgese tttet @tout mit mating putt ni tige sume.

TO ALL WHOM IT MAY CONGERN:

Be it known that I, SEWELL E. JEWETT, of Haverhill, county of Essex, and Stute of Massachusetts, have invented a. new und useful Improvement in Window-Blind Operators, thereby producing a. cheap, durable, and

y eflioent device for that. purpose; and I do declare that the following is u full, elem', and exact description of the construction and operation of lthe same, reference being had to the ucco1npanyiug-'di'awing,Lforming a part of this specification; whereini Y f Y A', Figure 1, representsun ordina-ry window-blind ns attached to the `window, and `it also represents my device for opening and closing the blind, consisting essentially of the following parts: Knob K, interior and exterior escutcheons E and E', slotted connecting-bar B, concave com C, vibmting-pin P, and lever-plate L. Seid lever-plate being firmly secured to the blind, connects the `whole device therewith'. Fig. I represents the blind as closed and fastened by slotted bar B engaging with interior escutcheon E.

To open the blind, raise knob K sufieiently toreleasc slot S from escutoheon E; then, by giving knob K a sudden inward motion, cum C is brought to bear upon pin I. The blind yielding to this pressure is thrown one half way open, its momentum carrying it past the cen/cre, brngingpin P into a, position relative to the projecting point J of cam C, as shown in Figure 2. Knob K, being now pressed outward, throtvs the blind entirely open, and fastened by slot S'again engaging with interior escutcheon E:

It is plain that by reversing the above operation the blind will be closed sind fastened.

, Claim. i

1, I clamlthe peculiar construction of cam C,'espeeia.lly with-reference to the projecting point J, as shown in g. 2, when applied to and usedfor the purpose of opening arid closing a. ivindow-blind.

2. I claim, in combination with said cam C, knob K, interior und exterior escutcheons E and E', slotted connecting-bar B, vibrating-pin P, and lever-plate L, all operating as specified, and `for the purpose as set 'fox-th,

I `SEWELL E. JEWETT.

Witnesses:

JAS. H. CAnLnToN, Jncou P. WHITMAN. 

